What is 42.7 squared ?!!

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What is 42.7 squared ?!!

Guest Feb 18, 2015

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Best Answer

+808

+5

42.7²

This formula might be helpful:

(a + b + c)² = a² + b² + c² + 2ab + 2bc + 2ca = a² + b² + c² + 2(ab + bc + ca)

We get:

42.7² = (40 + 2 + .7)² =

40² + 2² + .7² + 2(40 * 2 + 2 * .7 + 40 * .7) =

1600 + 4 + .49 + 2(80 + 1.4 + 28) =

1604.49 + 2 * 109.4 = 1823.29

Tetration Feb 18, 2015

2⁺⁰ Answers

+5

It's 1823.29, I believe :)

Guest Feb 18, 2015

+808

+5

Best Answer

42.7²

This formula might be helpful:

(a + b + c)² = a² + b² + c² + 2ab + 2bc + 2ca = a² + b² + c² + 2(ab + bc + ca)

We get:

42.7² = (40 + 2 + .7)² =

40² + 2² + .7² + 2(40 * 2 + 2 * .7 + 40 * .7) =

1600 + 4 + .49 + 2(80 + 1.4 + 28) =

1604.49 + 2 * 109.4 = 1823.29

Tetration Feb 18, 2015

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